Seiko Cal. 6638 - 327

Seiko 6638-327

Released in 1972, the Cal. 6638 with design code 327 was part of Seiko's domestic market collection. Powered by the 6638 caliber with 30j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-0521c54f42b7]

Also known as: Shogun, Baby Tuna

Specifications

Movement
Solar
Case Material
Titanium
Case Width
34mm
Case Thickness
15.0mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
140m
Dial Color
Cream
Jewels
30j
Frequency
36,000 bph
Power Reserve
60 hours
Year
1972

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